ElectriQ EcoSilent 14HPW: simplify fan_mode

It isn't really necessary to indicate fan_mode off when the device is off.
Other climate devices do not do this.

custom_components/tuya_local/devices/electriq_ecosilent14hpw_aircon.yaml

@@ -54,40 +54,15 @@ primary_entity:
       type: string
       mapping:
         - dps_val: "f1"
-          constraint: hvac_mode
-          conditions:
-            - dps_val: false
-              value: "off"
-            - dps_val: true
-              value: low
+          value: low
         - dps_val: "f2"
-          constraint: hvac_mode
-          conditions:
-            - dps_val: false
-              value: "off"
-            - dps_val: true
-              value: diffuse
+          value: diffuse
         - dps_val: "f3"
-          constraint: hvac_mode
-          conditions:
-            - dps_val: false
-              value: "off"
-            - dps_val: true
-              value: medium
+          value: medium
         - dps_val: "f4"
-          constraint: hvac_mode
-          conditions:
-            - dps_val: false
-              value: "off"
-            - dps_val: true
-              value: high
+          value: high
         - dps_val: "f5"
-          constraint: hvac_mode
-          conditions:
-            - dps_val: false
-              value: "off"
-            - dps_val: true
-              value: top
+          value: top
     - id: 19
       name: temperature_unit
       type: string